Astrhori lens at Amazon US&EU and BHphoto.
ThePhoBlographer reviewed this very unique lens and concluded:
Buy the Astrhori 50mm f1.4 Tilt if you need to break free from technically sterile images and want to do so with a slice of focus, fun flare, and an affordable price tag. The lens delivers some pretty great images with it’s tilt capabilities and wide aperture. The metal build also makes it a joy to shoot with.
Avoid the Astrhori 50mm f1.4 Tilt if chromatic aberration is one of your pet peeves, you want a lens that can go out in a drizzle, or you love pixel peeping. Beginners that haven’t yet mastered manual mode should also steer clear at least until some of those modes are mastered.